Theora

Theora is our video codec, based on the VP3 codec donated by On2 Technologies. We've refined and extended it, giving it the same future scope for encoder improvement Vorbis has. See http://theora.org/ for more information.

technologies used already in Vorbis (decoder setup configuration, bitstream headers...) not available in VP3

Note that not all of these features are already implemented in the reference encoder.

Status

1.0 Beta 2 is the latest stable release (2007-Oct-12).

The bitstream format was frozen in 1.0 Alpha 3: every file created with this encoder (and, of course, later encoders) will be playable by any compliant Theora decoder.

The decoder in 1.0 Alpha 8 implements all planned features of the Theora Format Specification: every file created by any compliant Theora encoder will be playable by the decoder in 1.0 Alpha 8 (and, of course, later decoders).